Finding the Third Proportional to 1,379,824 and 2,061,216

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379,824 : 2,061,216 = 2,061,216 : x
2. Step 2: Convert to fraction form
   1,379,824/2,061,216 = 2,061,216/x
3. Step 3: Cross multiply
   1,379,824x = 2,061,216 × 2,061,216
4. Step 4: Simplify right side
   1,379,824x = 4,248,611,398,656
5. Step 5: Solve for x
   x = 4,248,611,398,656/1,379,824
6. Step 6: Final answer
   x = 3,079,096.61